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Finding the Fourth Proportional to 465,882.99, 698,840.01 and 128,895.40

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Solution

The fourth proportional to 465,882.99, 698,840.01 and 128,895.40 is: 193,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,882.99 : 698,840.01 = 128,895.40 : x
  2. Step 2: Convert to fraction form
    465,882.99/698,840.01 = 128,895.40/x
  3. Step 3: Cross multiply
    465,882.99x = 698,840.01 × 128,895.40
  4. Step 4: Simplify right side
    465,882.99x = 90,077,262,624.95
  5. Step 5: Solve for x
    x = 90,077,262,624.95/465,882.99
  6. Step 6: Final answer
    x = 193,347.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.